Ann runs a small coffee shop. Caf lattes are by far her biggest seller. She can prepare 50 lattes, each requiring two minutes, if she spends 15 minutes preparing the coffee ahead of time and making sure she has all of her other supplies and ingredients well stocked and ready to use. How long does it take Ann to prepare the 50 lattes so that she can serve her customers?

	a.	100 minutes
	b.	110 minutes
	c.	115 minutes
	d.	None of the above